BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

We always seek to equip the workplace. That there was everything near at hand, good lighting and that is important, a convenient chair. And if a workplace – the car and in it it is necessary to spend the most part of time? As the problem in this case is solved: whether it is convenient to us to sit in our cars and what has to be our chair?

So, question first: correctness of landing is how important?

On early models of domestic cars established the seats which are not considering that factor at all that the person belongs to the class of vertebrata. Meanwhile the automobile chair is, in fact, a workplace: each driver, even the nonprofessional, carries out in him the tenth part of the life. The backbone experiences the biggest strain in a sitting position. On lumbar department at the same time weight literally of all body falls (even as it will not seem strange, those parts that is lower than a belt). Not casually, for example, after spine injuries to the patient allow to stand, lie, but forbid to sit.

The backbone has a number of physiological bends: cervical deflection forward (cervical лордоз), chest горбик back (chest кифоз), lumbar лордоз and sacral кифоз. Sideways the backbone reminds a Latin letter S or, even, more precisely, a dollar sign – $. The vertical line shows a weight vector here, and on crossing of this vector there are critical knots bearing the maximum load.

As the backbone has physiological bends, the seat has to "indulge" these bends. The chair back at the level of shovels has to be as if failed. The lumbar department, on the contrary, needs to be propped up a small pillow. It is desirable if it also surround a trunk, providing support to its side surfaces and interfering with moving to time of bends.

Question second: how to check correctness of landing?

When you sit down in a chair, each part of your body has to lay down as if in a case. The head (or a neck) – on the cervical roller, a back – in back deepening, a waist – on a lumbar pillow; hips at the same time do not slip forward. Body weight should not fall on any one its part. It is natural when the car starts, you will not remain in this pose, and slightly will move forward. But on the route when it is not necessary to twirl by the head, it is possible to dare to lean back in a chair and, holding a wheel, to have a rest a little.

Question third: what has to be an automobile chair?

The good automobile chair has to have an adjustable lumbar pillow, adjustable curvature of a back and, of course, a head restraint under a neck. The last serves for prevention of a hlystovy trauma (at blow in the car behind) and for maintenance of a cervical lordoz; even if there is no head restraint by car – it should be bought and put. Pay attention to the side rollers on a back and a pillow providing a side emphasis, and also the forward roller interfering "slipping" of the driver.

Separately I want to tell about a seat pillow on which we sit. It surely has to be rigid. The German cars are famous for it: it seems, the chair under you as wooden, and is convenient to sit. There is even an expression – "in German a rigid seat". The American cars, on the contrary, are equipped with excessively soft pillows of chairs; besides, often front seats in them are executed in the form of one "bench" that does not give a sufficient support to the case. Sometimes that part of a pillow that is under hips, has adjustment on height, and that that is closer to knees, – on length. At "adjustment under itself" on all these adjustments should be guided, of course, by criterion of convenience. In the good car, besides adjustment of a chair, there is an adjustment of a steering wheel. People all of different growth: high will make a seat lower (not to fight the head about a ceiling), and the person of small growth or the woman – is higher. And if the seat can be lifted-lowered, then and the wheel should be regulated too up-down.

Several advice to the driver who is tired in the workplace

Any driver, especially driving the "tryasuchy" car, has to at least, than time at two o'clock, to have a rest – to stop, go out of the car, to do several exercises. Well also to hang for a while on a roadside tree on hands, or – if the lorry – on a body side. It is useful to wear a special "industrial belt" – a peculiar semi-corset from dense synthetic material with the strengthening inserts in a waist. Such belt unloads a back and insures against excess load of vertebras. And the main thing – you monitor landing. Even if you got used to sit in a different way, try to put nevertheless under a waist a pillow – and obligatory it will become more convenient to you.